Moderate magnitude 4.9 earthquake at 7 km depth18 Apr 04:26 UTC: First to report: NIED after 6 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeApr 18, 2026 04:20:05 UTC - Local time at epicenterSaturday, Apr 18, 2026, at 01:20 pm (GMT +9)Statusconfirmed (manually revised)Magnitude4.9Depth7.4 kmEpicenter latitude / longitude36.577°N / 137.86°EOmachi-shi, Nagano, JapanSeismic antipode36.577°S / 42.14°WShaking intensityV Moderate shaking near epicenterFelt2 reportsPrimary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)Nearest volcanoMidagahara (24 km / 15 mi)Weather at epicenter at time of quakeBroken Clouds 18.4°C (65 F), humidity: 37%, wind: 2 m/s (3 kts) from ENEEstimated seismic energy released1.4 x 1012 joules (392 megawatt hours, equivalent to 338 tons of TNT) | equivalent to ONE quake of magnitude 4.9 | about seismic energy9 minutes ago reported feltApr 18, 2026 04:20 GMT / Apr 18, 2026 01:20 pm (GMT +9)Lat / Lng: 36.577 / 137.86: Japan: Northern Nagano PrefSource: NIEDDetail info | Read user reports | You felt it? - Report it!';storedMarkers.push(['quake-22920455',36.57700,137.86000,'9 minutes ago: Mag. 4.9, Japan: Northern Nagano Pref',html,'quakes-6-24.png',25,25,12,12,125]); function mkRep(id,notFelt){var nFelt=notFelt||false;var src="https://www.volcanoesandearthquakes.com/app/earthquake-report.php?quakeId="+id;if(nFelt==true){src+="¬Felt=true";}window.open(src,"","status=0,toolbar=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1,height=400,width=350");} function locationHashChanged(e){-1!=e.oldURL.indexOf("#popupMap")&&closePopup()} window.onhashchange = locationHashChanged; function comment(e){var t=e.parentNode,a=(t.dataset.id,document.getElementById("commentForm"));"none"==a.style.display?(t.appendChild(a),a.style.display="block"):a.style.display="none"}function sendComment(e){var t=e.parentNode,a=t.parentNode.dataset.id,n=document.getElementById("commentContent"),p=n.value.trim();if(p){var o="id="+a+"&quakeId="+thisQuakeId;o+="&comment="+decodeURIComponent(p),mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",o,function(e){e.responseText;alert("Thank you for submitting your comment!"),t.style.display="none",n.value=""})}}function flagReport(e){var t=e.parentNode.dataset.id;if(confirm("Report this as inappropriate?")){var a="id="+t+"&quakeId="+thisQuakeId+"&flagAsInappropriate=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",a,function(t){var a=t.responseText;alert(a),e.style.display="none"})}}function likeReport(e){var t="id="+e.parentNode.dataset.id+"&quakeId="+thisQuakeId+"&like=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",t,function(t){t.responseText;e.style.opacity=.5})}]]>[smaller] [bigger]Most recent quakes Top 20 past 24 hrs Quakes in JapanNearby placesThe closest larger town where the quake might have been felt is Nagano, a city with more than 370,000 inhabitants in Japan, in 30 km (19 mi) distance east of the epicenter. People likely experienced light shaking there. Several smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of Japan, Tokyo, 192 km (119 mi) away from the epicenter, the earthquake was probably felt as very weak shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry9 km (5 mi)S of epicenterOmachi(pop: 27,600)V: ModerateOmachi-shi, NaganoJapan21 km (13 mi)E of epicenterChikuma(pop: 59,400)IV: LightNaganoJapan26 km (16 mi)S of epicenterHotaka(pop: 33,200)IV: LightAzumino-Shi, NaganoJapan30 km (19 mi)E of epicenterNagano(pop: 372,800)IV: LightNaganoJapan31 km (19 mi)S of epicenterToyoshina(pop: 27,800)IV: LightAzumino-Shi, NaganoJapan31 km (19 mi)E of epicenterSakaki(pop: 15,000)IV: LightHanishina-gun, NaganoJapan32 km (20 mi)S of epicenterAzumino(pop: 94,200)IV: LightNaganoJapan39 km (25 mi)S of epicenterMatsumoto(pop: 241,100)IV: LightNaganoJapan42 km (26 mi)E of epicenterSuzaka(pop: 54,000)IV: LightNaganoJapan42 km (26 mi)SE of epicenterUeda(pop: 157,500)IV: LightNaganoJapan46 km (29 mi)W of epicenterKamiichi(pop: 20,800)IV: LightNakaniikawa Gun, ToyamaJapan47 km (29 mi)SE of epicenterKamimaruko(pop: 25,400)IV: LightUeda Shi, NaganoJapan48 km (30 mi)NW of epicenterUozu(pop: 45,800)IV: LightToyamaJapan49 km (30 mi)NW of epicenterNamerikawa(pop: 34,600)IV: LightToyamaJapan49 km (31 mi)NE of epicenterNakano(pop: 42,700)IV: LightNaganoJapan49 km (31 mi)W of epicenterGohyakkoku(pop: 24,800)IV: LightNakaniikawa Gun, ToyamaJapan51 km (32 mi)N of epicenterItoigawa(pop: 40,800)IV: LightNiigataJapan51 km (32 mi)SE of epicenterTomi(pop: 30,100)IV: LightTomi Shi, NaganoJapan51 km (32 mi)NW of epicenterNyuzen(pop: 25,000)IV: LightShimoniikawa Gun, ToyamaJapan51 km (32 mi)NW of epicenterKurobe-shi(pop: 41,600)IV: LightKurobe Shi, ToyamaJapan54 km (34 mi)S of epicenterShiojiri(pop: 67,200)IV: LightNaganoJapan54 km (34 mi)NE of epicenterIiyama(pop: 20,100)IV: LightNaganoJapan57 km (36 mi)NE of epicenterArai(pop: 27,500)IV: LightMyoko-shi, NiigataJapan59 km (37 mi)SE of epicenterKomoro(pop: 46,300)IV: LightNaganoJapan60 km (37 mi)S of epicenterShimosuwa(pop: 20,100)IV: LightSuwa-gun, NaganoJapan60 km (37 mi)S of epicenterOkaya(pop: 54,300)IV: LightNaganoJapan61 km (38 mi)NE of epicenterMyoko(pop: 30,400)IV: LightNiigataJapan64 km (40 mi)S of epicenterSuwa(pop: 49,000)III: WeakNaganoJapan67 km (42 mi)S of epicenterTatsuno(pop: 19,000)III: WeakKamiina-gun, NaganoJapan69 km (43 mi)SE of epicenterSaku(pop: 99,100)III: WeakNaganoJapan69 km (43 mi)W of epicenterImizu(pop: 90,700)III: WeakToyamaJapan70 km (43 mi)SE of epicenterChino(pop: 56,400)III: WeakNaganoJapan72 km (45 mi)NE of epicenterJoetsu(pop: 189,400)III: WeakJoetsu Shi, NiigataJapan74 km (46 mi)SW of epicenterTakayama(pop: 88,500)III: WeakGifuJapan76 km (47 mi)S of epicenterKinoshita(pop: 25,000)III: WeakKamiina-gun, NaganoJapan78 km (48 mi)W of epicenterTakaoka(pop: 170,100)III: WeakToyamaJapan84 km (52 mi)W of epicenterHimimachi(pop: 54,500)III: WeakHimi Shi, ToyamaJapan84 km (52 mi)S of epicenterIna(pop: 68,200)III: WeakNaganoJapan183 km (113 mi)NE of epicenterNiigata(pop: 797,600)III: WeakNiigataJapan192 km (119 mi)SE of epicenterTokyo(pop: 9,733,300)II: Very weakTokyoJapanNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quake (3)So far, we have received 3 reports for this quake. This section is being updated as new data comes in.User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.Contribute:Leave a comment if you find a particular report interesting or want to add to it.Flag as inappropriate.Mark as helpful or interesting.Send your own user report!TranslateEarthquake Japan (449.4 km SW of epicenter) [Map] / Weak shaking (MMI III) / complex rolling (tilting in multiple directions) / 30-60 s : Earthquake Mag 3.8 Struck Japan Island Honshu Prefecture Shimane Matsue Okuizumo Shi Border Prefecture Tottori Tsunami No (reported through our app) 434.9 km WSW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)188.2 km E of epicenter [Map] / not felt (reported through our iOS app)What is Intensity and the Mercalli Intensity Scale?The amount of shaking that occurs on the surface due to an earthquake is called the intensity. It is commonly measured on the so-called Modified Mercalli Intensity Scale (MMI) ranging from 1 (not felt) to 10 (extreme shaking), and given in Roman numerals as I,II,...IX, X, and often displayed with color codes ranging from light blue to dark red.Earthquake intensity depends mainly on the magnitude and depth of the quake as well as the distance from the epicenter: The further away, the less shaking intensity occurs.Read more about the MMI scale!Number of reports by intensityShaking intensityNumber of reportsMin-Max distance from epicenter (*)Average distance (*)I: Not felt1188–188 km (117–117 mi)188 km (117 mi)Notes(*) Reports are filtered to exclude those that are likely highly inaccurate or esaggerated.Only reports with latitude/longitude coordinate positions given (3 in total) could be used for geographic statistics.Get the Android appI didn't feel itI felt this quakeIf you were near the epicenter and felt it, please share your experience and submit a short "I felt it" report! Other users would love to hear about it!If you did NOT feel the quake although you were in the area, please report it as well! Your contribution is valuable to earthquake science and seismic hazard analysis.Compare Quake DataData for the same earthquake as reported by different agenciesThe more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.MagDepthTime GMT2026-04-18EpicenterAgency4.97.4 km4.6 mi04:20:05NORTHERN NAGANO PREFNIED (National Research Institute for Earth Science and Disaster Resilience)Aftershocks for this quakeNo aftershocks have been recorded so far. When aftershocks are detected, we will update this section.What are aftershocks?Larger earthquakes (above magnitude 5 or so) such as this one are usually followed by smaller ones known as aftershocks that occur in the same area during the days, weeks, months or even years after the main shock.[More info]What about this quake?Based on its magnitude, the fault that was active during the quake likely ruptured beneath a surface area of approximately 8 km2 (3 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 5 km (3 mi).[More info]Recorded aftershocks, latest first (0 quake)Apr 18, 2026 01:20 pm (GMT +9)9 minutes ago - felt4.97.4 km0 km - This quakeNagano, JapanMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 3,200 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.04 quakes per year (or 1 quake every 25 years)Mag. 5 or higher: 0.75 quakes per year (or 1 quake every 1.3 years)Mag. 4 or higher: 10.3 quakes per yearMag. 3 or higher: 65 quakes per year (or 5.4 quakes per month)Mag. 2 or higher: 203 quakes per year (or 16.9 quakes per month)Mag. 1 or higher: 747 quakes per year (or 62 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 5 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 25 to 30 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 13 weeks after a magnitude 5.1 earthquake had hit on Thursday, Jan 15, 2026, at 02:48 pm (GMT +9 local time) in 47 km (29 mi) distance to the south:Mag. 5.1 earthquake 17 km southwest of Azumino - Nagano, Japan - Jan 15, 2026 - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 7.5. It had occurred 2 years earlier, on Monday, Jan 1, 2024, at 04:10 pm (GMT +9 local time) in Ishikawa-ken, Japan:Mag. 7.5 earthquake Ishikawa-ken - Toyama, Japan - Jan 1, 2024 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.9. It had occurred 15 years ago earlier, on Friday, Mar 11, 2011, at 03:15 pm (GMT +9 local time) in North Pacific Ocean, Japan:Mag. 7.9 earthquake North Pacific Ocean - Ibaraki, Japan - Mar 11, 2011 - Below is a list and map of larger or recent quakes that had occurred near the epicenter before this earthquake (within up to 100 km/61 mi distance, up to 300 km/183 mi for very large quakes above mag. 7). Filter and sort the list by magnitude or time.Max results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageDate and TimeMagDepthDistanceLocationDetailsMapApr 14, 03:34 pm (GMT +9)4.00 km39 km (24 mi) to the SW 36 km northeast of Takayama, Gifu, Japan I FELT IT - 3 reportsInfoApr 5, 02:18 am (GMT +9)4.1339 km94 km (58 mi) to the NSea of Japan or East Sea, 46 km northwest of Joetsu, Niigata, Japan 1 reportInfoMar 13, 04:25 am (GMT +9)4.10 km30 km (19 mi) to the SW Eastern Honshu, Japan 2 reportsInfoMar 3, 10:36 pm (GMT +9)4.1414 km87 km (54 mi) to the W 9.7 km northwest of Takaoka, Toyama, Japan 1 reportInfoFeb 24, 08:03 am (GMT +9)4.8260 km85 km (53 mi) to the NWSea of Japan or East Sea, 9.7 km southeast of Nanao, Ishikawa-ken, JapanInfoJan 15, 02:48 pm (GMT +9)5.16.7 km47 km (29 mi) to the S 17 km southwest of Azumino, Nagano, Japan 1 reportInfoApr 18, 2025 08:19 pm (GMT +9)5.210 km8.2 km (5.1 mi) to the S 31 km southwest of Nagano, Nagano, Japan 58 reportsInfoJul 11, 2024 12:01 pm (GMT +9)4.910 km61 km (38 mi) to the NWSea of Japan or East Sea, 10.5 km north of Kurobe-shi, Toyama, Japan 2 reportsInfoJan 1, 2024 04:10 pm (GMT +9)7.510 km114 km (71 mi) to the NWIshikawa-ken, 85 km north of Takaoka, Toyama, Japan 191 reportsInfoSep 19, 2021 05:18 pm (GMT +9)5.02 km38 km (24 mi) to the SW Eastern Honshu, Japan 5 reportsInfoApr 21, 2021 02:39 am (GMT +9)4.9167 km75 km (46 mi) to the SE EASTERN NAGANO PREF, Japan 8 reportsInfoMay 19, 2020 01:13 pm (GMT +9)5.310 km39 km (24 mi) to the SW 27 km west of Matsumoto, Nagano, Japan 1 reportInfoApr 23, 2020 01:44 pm (GMT +9)5.210 km42 km (26 mi) to the S Eastern Honshu, Japan 4 reportsInfoDec 6, 2017 12:13 am (GMT +9)5.110 km32 km (20 mi) to the SE 14 km east of Toyoshina, Nagano, Japan 3 reportsInfoJun 24, 2017 10:02 pm (Universal Time)5.310 km75 km (47 mi) to the SGifu, 36 km west of Ina, Nagano, Japan 5 reportsInfoNov 22, 2014 10:08 pm (GMT +9)6.112 km6.4 km (4 mi) to the NW 8.1 km south of Hakuba, Nagano, Japan 12 reportsInfoOct 5, 2011 07:06 pm (GMT +9)5.213 km44 km (27 mi) to the W 28 km southeast of Toyama, Toyama, JapanInfoOct 5, 2011 07:00 pm (GMT +9)5.310 km26 km (16 mi) to the SWToyama, 25 km west of Omachi, Nagano, JapanInfoApr 12, 2011 07:26 am (GMT +9)5.517 km46 km (28 mi) to the NE 9.9 km northwest of Nakano, Nagano, JapanInfoMar 12, 2011 04:31 am (GMT +9)5.712 km57 km (35 mi) to the NE Eastern Honshu, JapanInfoMar 12, 2011 03:59 am (GMT +9)6.29.3 km67 km (42 mi) to the NE 13 km E of Arai, JapanInfoMar 11, 2011 03:15 pm (GMT +9)7.943 km293 km (182 mi) to the E 47 km E of ?arai, JapanInfoOct 25, 2004 12:28 am (GMT +9)5.213 km99 km (62 mi) to the NE 10 km NW of T?kamachi, JapanInfoOct 23, 2004 07:36 pm (GMT +9)5.710 km100 km (62 mi) to the NE 15 km NW of T?kamachi, JapanInfoOct 23, 2004 06:11 pm (GMT +9)5.818 km99 km (62 mi) to the NE 15 km SSE of Kashiwazaki, JapanInfoJan 4, 2001 01:18 pm (GMT +9)5.321 km82 km (51 mi) to the NE 20 km WSW of Shiozawa, JapanInfoAug 16, 1998 03:31 am (GMT +9)5.510 km39 km (25 mi) to the SW 29 km west of Matsumoto, Nagano, JapanInfoJul 10, 1996 12:49 pm (GMT +9)5.46 km25 km (15 mi) to the SE 26 km southwest of Nagano, Nagano, JapanInfoMar 24, 1987 09:49 pm (GMT +9)5.723 km97 km (60 mi) to the NSea of Japan or East Sea, 47 km northwest of Joetsu, Niigata, JapanInfoDec 30, 1986 09:38 am (GMT +9)5.610 km10.4 km (6.5 mi) to the N 26 km west of Nagano, Nagano, JapanInfoSep 15, 1984 07:14 am (GMT +9)5.710 km98 km (61 mi) to the SW eastern Honshu, JapanInfoSep 14, 1984 08:48 am (GMT +9)6.210 km94 km (58 mi) to the S 42 km northwest of Iida, Nagano, JapanInfoMay 19, 1981 12:31 am (GMT +9)5.435 km51 km (32 mi) to the NSea of Japan or East Sea, 49 km west of Joetsu, Niigata, JapanInfoNov 18, 1977 11:57 pm (GMT +9)5.4273 km69 km (43 mi) to the W 17 km southwest of Toyama, Toyama, JapanInfoFeb 26, 1971 04:27 am (GMT +9)5.619 km79 km (49 mi) to the NE 12 km E of J?etsu, JapanInfoAug 29, 1970 10:43 am (GMT +9)5.5282 km101 km (63 mi) to the NW 11 km southwest of Nanao, Ishikawa-ken, JapanInfoNov 3, 1968 04:37 pm (GMT +9)5.90 km27 km (17 mi) to the NW 33 km east of Toyama, Toyama, JapanInfoJan 9, 1966 07:39 am (GMT +9)5.346 km91 km (56 mi) to the NE 21 km south of Kashiwazaki, Niigata, JapanInfoJun 16, 1964 01:01 pm (GMT +9)7.615 km239 km (148 mi) to the NESea of Japan or East Sea, 57 km north of Niigata, Niigata, JapanInfoJul 15, 1941 02:45 pm (Universal Time)6.215 km38 km (24 mi) to the NE 10.6 km northeast of Nagano, Nagano, JapanInfoNov 8, 1934 03:25 am (Universal Time)5.715 km67 km (41 mi) to the NSea of Japan or East Sea, 20 km west of Joetsu, Niigata, JapanInfoMar 7, 1927 09:27 am (Universal Time)7.010 km281 km (175 mi) to the SWKyoto, 16 km east of Toyooka, Hyōgo, JapanInfoJan 14, 1924 08:50 pm (Universal Time)7.015 km162 km (101 mi) to the SE 3.3 km northeast of Sayama, Saitama, JapanInfoSep 2, 1923 02:46 am (Universal Time)7.815 km257 km (160 mi) to the SE 5 km E of Tateyama, JapanInfoSep 1, 1923 03:48 am (Universal Time)7.00 km229 km (143 mi) to the SENorth Pacific Ocean, 35 km south of Kamakura, Kanagawa, JapanInfoSep 1, 1923 03:03 am (Universal Time)7.335 km221 km (137 mi) to the SENorth Pacific Ocean, 39 km south of Yokohama, Kanagawa, JapanInfoSep 1, 1923 02:58 am (Universal Time)7.915 km197 km (123 mi) to the SE 5 km SSE of ?iso, JapanInfoNov 11, 1918 07:03 am (Universal Time)6.115 km45 km (28 mi) to the S 14 km southwest of Matsumoto, Nagano, JapanInfoJan 21, 1906 01:49 pm (Universal Time)7.4300 km268 km (166 mi) to the SPhilippine Sea, 96 km south of Shizuoka, Shizuoka, JapanInfoOct 24, 1905 03:46 am (Universal Time)7.3250 km305 km (189 mi) to the SPhilippine Sea, 123 km northwest of Hachijo Jima Island, Tokyo, JapanInfoMap of earlier quakes in the area of this quakeMax results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageOldest quakes are shown in yellow, most recent in red.[quakes -][quakes +][smaller][bigger]